Unit4 Plant life（Fuel up &hit it big &wrap up）知识点与练习（同步练）-2025-2026学年外研版（三起）英语四年级下册

Unit4 Plant life（Fuel up &hit it big &wrap up）知识点与练习 一、Unit4 Plant life核心知识点表格 类别 具体内容 句型结构/语法说明 重点词组/短语 come from plants（来自植物） grow plants（种植植物） plant journal（植物日记） plant seeds（播种） water the wheat（浇小麦） pick cotton（摘棉花） look at（看） dig the earth（挖泥土） the parts of a plant（植物的各个部分） grow up（长大） 重点句子 What are you doing? We're digging.（你正在做什么？我们正在挖泥土。） 句型结构：What + be动词(am/is/are) + 主语 + doing? 答句：主语 + be动词(am/is/are) + 动词-ing形式. Are your seeds growing? Yes, they are.（你的种子正在生长吗？是的，它们正在生长。） 句型结构：Be动词(Am/Is/Are) + 主语 + 动词-ing形式? 答句：Yes, 主语+be./No, 主语+be+not. Is he watering the wheat? Yes, he is.（他正在浇小麦吗？是的，他正在浇。） 句型结构：Be动词(Am/Is/Are) + 主语 + 动词-ing形式? 答句：Yes, 主语+be./No, 主语+be+not. What are they doing? They're picking cotton.（他们正在做什么？他们正在摘棉花。） 句型结构：What + be动词(am/is/are) + 主语 + doing? 答句：主语 + be动词(am/is/are) + 动词-ing形式. 重点语法 现在进行时（表示正在发生的动作） 1. 构成：主语+be(am/is/are)+动词-ing形式 2. 动词-ing变化规则： 1 一般直接加-ing（如plant-planting, water-watering） 2 以重读闭音节结尾，辅+元+辅结构，双写末尾辅音加-ing（如dig-digging） 3 以不发音e结尾，去e加-ing（如make-making） 3. 疑问式：Be动词提前；特殊疑问式：特殊疑问词+Be+主语+doing? 二、基础练习 （一）词汇运用：根据句意填出正确的单词，注意形式 1. The little ______ (seed) will grow into a big tree. 2. We are ______ (water) the flowers in the garden now. 3. Look at the green ______ (leaf) on the tree. 4. My father is ______ (dig) a hole to plant a peach tree. 5. The ______ (stem) of the sunflower is very tall. （二）句型转换：根据要求改写句子，每空一词 1. I am planting rice seeds. (对划线部分提问) ______ ______ you ______? 2. They are picking cotton in the field. (改为一般疑问句并作肯定回答) —______ they ______ cotton in the field? —Yes, ______ ______. 3. He is watering the wheat. (改为否定句) He ______ ______ the wheat. 4. She is looking at the plant's roots. (对划线部分提问) ______ ______ she ______? 三、语法专项练习 （一）用所给动词的适当形式填空 1. What ______ (be) you ______ (do) now? I ______ (grow) a tomato plant. 2. Look! The boy ______ (dig) the earth for his sunflower seeds. 3. My sister ______ (not water) the flowers. She ______ (read) a book. 4. ______ (be) Tom ______ (pick) apples on the farm? No, he isn't. 5. They ______ (make) a small garden for their class now. （二）单项选择 （ ）1.—What is Lingling doing? —She ______ a plant journal. A. make B. makes C. is making （ ）2.My mother ______ the wheat now. A. waters B. is watering C. water （ ）3.—Are you planting bean seeds? —______ A. Yes, I am. B. Yes, I do. C. No, I don't. （ ）4.What ______ Sam and Amy doing? A. is B. are C. do （ ）5.The girl ______ looking at the plant's leaves. A. am B. is C. are 四、拓展性综合练习 ( from, grow, roots, leaves, water, plant )（一）选词填空（每词限用一次） 1. We ______ the flowers every morning. 2. The rice comes ______ the farm. 3. The little tree has small ______ and green ______. 4. Let's ______ a sunflower in our garden. 5. The seeds ______ into big plants in spring. （二）单项选择 （ ）1.—______ are you doing? —I'm keeping a plant journal. A. What B. Where C. Who （ ）2.The plant's ______ are in the earth. They take water from it. A. stems B. roots C. flowers （ ）3.—Is he digging a hole? —No, he ______. He's picking cotton. A. isn't B. don't C. doesn't （ ）4.We use plants ______ paper and chairs. A. make B. to make C. making （ ）5.Look at the sunflower! Its ______ is yellow and beautiful. A. leaf B. stem C. flower ( ① What are you doing there? ② Where are you? ③ How often do you water the seeds? ④ I hope your seeds will grow well! ⑤ Are you busy now? )（三）选择合适的句子补全对话（只填序号） A: Hello, Daming! 1.______ B: I'm in the school garden. A: 2.______ B: I'm planting sunflower seeds with Sam. A: 3.______ B: Yes, they are. Sam is digging the earth and I'm putting the seeds in it. A: 4.______ B: We water them every day. A: That's great! 5.______ B: Thank you! （四）连词成句（注意标点和大小写） 1. doing, what, you, are (?) 2. the, is, he, wheat, watering (.) 3. seeds, are, growing, your (?) 4. picking, they, cotton, are, the (.) 5. a, plant, let's, garden, small, make (.) （五）阅读理解：判断正(T)误(F) Hello, I'm Lily. I love plants. Now I'm keeping a plant journal for my lettuce. On Day 1, I plant the lettuce seeds in a small pot. I water them one time a day. The lettuce needs 6-8 hours of sunlight every day. On Day 7, small leaves come out. They are green and cute. On Day 18, the leaves are big. I am very happy. I hope my lettuce will grow well. I want to eat it with my family! ① What are you doing there? ② Where are you? ③ How often do you water the seeds? ④ I hope your seeds will grow well! ⑤ Are you busy now? （ ）1.Lily is keeping a plant journal for her sunflower. （ ）2.Lily waters the lettuce seeds one time a day. （ ）3.The lettuce needs 6-8 hours of sunlight a day. （ ）4.On Day 18, the lettuce has small green leaves. （ ）5.Lily wants to eat the lettuce with her family. 五、答案与解析 二、基础练习答案与解析 （一）词汇运用 1. seeds（seed是可数名词，前面无冠词，用复数） 2. watering（now是现在进行时标志，be+doing） 3. leaves（leaf的复数形式为leaves，表泛指） 4. digging（dig的-ing形式双写g加ing，现在进行时） 5. stem（向日葵的茎，单数即可） （二）句型转换 1. What; are; doing（对动作提问用what，现在进行时特殊疑问句） 2. Are; picking; they; are（现在进行时一般疑问句be动词提前，主语是they，be用are） 3. isn't; watering（现在进行时否定句，be后加not） 4. What; is; doing（对动作提问用what，主语she是第三人称单数，be用is） 三、语法专项练习答案与解析 （一）用所给动词的适当形式填空 1. are; doing; am growing（you搭配are，I搭配am，现在进行时） 2. is digging（look是现在进行时标志，the boy是第三人称单数） 3. isn't watering; is reading（否定句be+not，并列句保持时态一致） 4. Is; picking（Tom是第三人称单数，be用is） 5. are making（they是复数，be用are，现在进行时） （二）单项选择 1. C（现在进行时，主语she，be用is，make+ing） 2. B（now是现在进行时标志，my mother是第三人称单数） 3. A（现在进行时一般疑问句的回答，用be动词回应） 4. B（Sam and Amy是复数，be用are） 5. B（the girl是第三人称单数，be用is） 四、拓展性综合练习答案与解析 （一）选词填空 1. water（一般现在时，主语we，动词用原形） 2. from（come from 固定搭配，意为“来自”） 3. roots; leaves（根在土里，树叶是绿色的，均为复数表泛指） 4. plant（let's后接动词原形） 5. grow（grow into 固定搭配，意为“长成”） （二）单项选择 1. A（对动作提问用what） 2. B（根在泥土里吸收水分，常识+词汇辨析） 3. A（现在进行时一般疑问句否定回答，be用is，否定为isn't） 4. B（use...to do... 固定搭配，意为“用……做……”） 5. C（向日葵的花是黄色的，词汇辨析） （三）补全对话 1.② 2. ① 3. ⑤ 4. ③ 5. ④（根据答句推问句，结合语境衔接） （四）连词成句 1. What are you doing? 2. He is watering the wheat. 3. Are your seeds growing? 4. They are picking the cotton. 5. Let's make a small plant garden. （五）阅读理解 1. F（解析：文中说“keeping a plant journal for my lettuce”，不是sunflower） 2. T（解析：文中说“I water them one time a day.”） 3. T（解析：文中说“The lettuce needs 6-8 hours of sunlight every day.”） 4. F（解析：文中说“On Day 7, small leaves come out. On Day 18, the leaves are big.”） 5. T（解析：文中说“I want to eat it with my family!”） 学科网（北京）股份有限公司 $